US1858882A

US1858882A - Stuffing-box and packing therefor

Info

Publication number: US1858882A
Application number: US444697A
Authority: US
Inventors: James R Cole
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-04-16
Filing date: 1930-04-16
Publication date: 1932-05-17
Anticipated expiration: 1949-05-17

Description

May 17, 1932. .1. R. COLE STUFFING BOX AND PACKING THEREFOR Filed April 16, 1930 INVENTOR Patented May 17, 1932 UNITED STATES;

31mins nfloonn, or TULSA counrr, okmmom 1 swarms-Box annrxcxme rnnanron Application filed April 18, 1980. Serial No. 444,597.

My invention relates to stufling boxes, primarily for oil wells but capable of using in other connections, and has for its object to provide a box which can be very easily opened I. to replace the rubbers or packing material, and very easily closed, and one which permits all of the rubber or packing material to be used. The convenience mentioned is particularly beneficial on oil wells where many times I a wrench to open and close a box in order to replace rubbers, is not handy. My invention also relates to providing means of satisfactorily packing such a box' in the manner stated, that is in providing a packing element in a form so that it may all be used up in the-box.

With the above and other objects in view which will appear as lhe description proceeds, my invention consists in the novel features hereinafter set forth in detail, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims. I I

Referring to the drawings, in which numerals of like character designate similar parts thruout the several views: Y

Fig. 1 is a cross sectional view in side elevation, on li ne .AA Fig. 2, of the polished rod'and box with the rubbers or packing ,in place.

Fig. 2 is a cross sectional view in end elevation, on line BB Fig. 1, of the lished rodandstufling box frame, showing t e packing chamber. 1

Fig. 3 is a cross sectional view in top elevation, on line C-C Figs. 1 and 2.

Fig. 4 is a view of a rubber or packing elengeint having a groove to take the polished r Fig. 5 is a view of a rubber without the groove and designedto use following the ruber shown in Fig. 4.

Fig. 6 is a rubber in modified form having the polished rod groove and also. having the opposite end to the polished rodgroove of the contour of said grt ve so as to dovetail into it when following arubber into the :box.

Fig. 7 is a follower in modified form with its face made to conform to the rear nd of' the modified form of rubber shown in ig. 6.

I an Fig. 8 is. a cross sectional side elevation of a modified form of locking arrangement for the thrust plate or removablev breech block. 11 of Fig. 1.

Fig. 9 is an end view shown in Fig. 1.

In the drawings, 1 represents the polished rod or other reciprocating element, 2 the stufling box frame or body portion which is threaded as at 3 toattach to the tubing or 6.0 pipe or chamber containin the fluid which it is desired to pack off, 4 t e packing chamber which together with its passage way which is a continuation of the chamber, runs clear. thru the box from one end to the other and open on both ends, 5 the rubbers or packing elements which are inserted in the open end of the packing chamber 4 thru the passage way aforesaid, 6 the straight sided replacement rubbers designdd to follow the rubber 5 as the latter wears, 7 a modified typej of rubber or packing element designed so of the stufling box 55 that one may follow the other into the box and this type would replace-both rubbers 5 and 6, 8 the follower which contacts with the rubber and forces it into place against the polished rod by means of a screw 10 threaded into athrust plate or removable breech block 11 held on the end of the stuffing boxby a locking groove 12 on the box, and by a 5 latch 13 on the box. The arrangement per- 7 mits the thrust plate to be inserted into thegroove 12 and then positioned against the end of the box, and the latch, which is pivoted i so that it may be turned, is then brought over the thrust plate. The follower 8, when pulled back close to the thrust plate will clear the chamber or passage way wall's. When the follower is screwed against the rubber 5, the thrust plate bears against the shoulder or flange of the groove 12 and 1 against the latch 13. v 1

n Fig. 8 is shown another lockin device locking the, thrust plate 1Lv agalnst the ends of the stuffing box chamber, and in this, form the latch is dispensed with and opposite the groove which corresponds to groove 12 in Fig. 1 is a deeper groove or recess 14 ending in'a shoulder 15. In using this form,- f the follower is screwed back ,against the thrustplate or nearly so, and the thrust plate then inserted in groove 14 which is large enough to hold the lip of the thrust plate thus inserted therein and deep enough to then permit the other end or opposite lip of the thrust plate to be inserted in the groove corresponding to the groove '12 in Fig. 1, whereupon the end of the thrust plate in groove l fisbrou ht back to the shoulder 15. When the 0 lower is screwed up against the rubber or packing element preceding it into the packing chamber, the pressure holds the thrust plate against the shoulder or flange 15- of the recess 14 and against the shoulder or flange 16 of the recess corresponding to the groove 12 in Fig. 1.

It will thus be seen that.no tools are necessary to open the box and insert the rubbers or packing element, and that when the packing element wears no. part thereof is removed and thrown away but another element is inserted thru the breech of the packing chamber and its passage way and pressed into the packing chamber and compressed therein.

Having what I claim and desire to secure by Letters Patent is 1. A packing element adapted for use in a stuffing box wherein a plurality of packing elements are used on opposite sides of a reciprocating element passed thru said stuffing box, front and rear surfaces on said packing element, and with said front and rear surfaces correspondingly contoured to conform to each other to the effect that one of such packing elements may follow behind another of such packing elements into a stuffing box 'and in its turn engage the reciprocating element aforesaid without an intervening space existing between the two packing elements such as would leave the perimeter 6f the packing chamber of said stufiing box exposed to the passage of fluid between the two aforesaid packing elements.

2. 5 A stufling box adapted to receive a polished rod passed thru its packing chamber, and having a packing chamber open at opposite sides of the. polished rod and with said .'said packing element against said polished rod opening arranged so that a packing element may be inserted therethru on either side of polished rod; means of compressing said and against the walls of said packing chamber one of which means is a breech block adapted to be held in position orrsaid stuffing box by the pressure exerted in compressing said packing element within said stufling box.

3. A stuffing box as claimed in claim 2, with breech block as therein claimed, and

thus fully disclosed by invention,

ished rod passed thru its acking chamber and having a packing cham er open at opposite sides of the polished rod and with said openings arranged so that a packing element may be inserted'therethru on either side of said olished rod; means of compressing said packing element against said polished rod and against the walls of said packing chamber one of which means is a breech block; and means provided whereby said breech block may be both positioned and held on said box and removed therefrom without any operation other than by operating the said means of compressing said packing element.

5. A packing element as claimed in claim 1. and with the front face of said packing element having therein a groove adapted to partially receive the polished rod aforesaid, and with the rear face of said packing element havin there!) a corresponding ridge. 6. A stu ng box a a ted to receive a re ciprocating element passed thru its packing chamber; a packing chamber as aforesaid in said stuffing box and positioned laterally of s the position assumed by said polished rod when passed thru said stuffing box; an opening in the end of said packing chamber adapted to receive a packing element passed thru said opening and into said packing chamber; a passageway communicating with said opening and leading tothe exterior of said stuffing box and so adapted and arranged that a packing element may be inserteththerethru into said packing chamber; a recess ,in said passageway adapted to receive a portion hereinafter mentioned removable breech block; means of compressing the aforesaid packing element against said reciprocating element when the same is in said stufling box and of compressing said. packing element against the walls of said packing chamber, one of which means is a removable breech block adapted to be held in operatingposition on said stuffing box by the pressure exerted in compressing said packing element within said packing chamber.

In testimony whereof I affix my signature. JAMES R. COLE.

which said breech block is adapted to be released from said stufiing box by removing the pressure on said packing element and by running back one of the means of compressing sai packin element.

4. A stufling ox adapted to receive a polof the a